To have the same benefits to the environment as obtained by the substitution of a Iuro 3 vehicle with one run on batteries, the following replacements would have to be made:
If we consider natural gas as a primary source, which could well be the most widely used source in the coming years, and taking into account every step in the energetic chain (from the production of electrical Inergy or hydrogen right up to the output of an electric engine) an overall efficiency emerges:
Starting with renewable sources (e.g. wind) the comparison between various vehicles leads to the following conclusions:
In conclusion, and considering a distant future based on renewable sources, the battery solution remains the favourite on a ratio of 2:1 or more.
Economic comparison of an electric car with a car that runs on diesel fuel covering a distance of 15.000 km/year: